CN103334076B - A kind of crankshaft nitriding process for cooling - Google Patents
A kind of crankshaft nitriding process for cooling Download PDFInfo
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- CN103334076B CN103334076B CN201310251517.3A CN201310251517A CN103334076B CN 103334076 B CN103334076 B CN 103334076B CN 201310251517 A CN201310251517 A CN 201310251517A CN 103334076 B CN103334076 B CN 103334076B
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- cooling
- axle
- nitrogenize
- bent axle
- floral disc
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Abstract
The invention discloses a kind of crankshaft nitriding process for cooling, comprise the steps: first in nitrogenize axle cooling pool, to add the polyethylene solvent that concentration is 8%-15%, in nitrogenize axle rinsing bath, add clear water simultaneously; Then bent axle put into nitriding furnace by extension dish and pass into nitriding furnace the ammonia that mass percent concentration is 99.99%, after being incubated 3-6 hours after nitriding furnace being warming up to 500 DEG C-600 DEG C, bent axle is come out of the stove simultaneously; Bent axle after coming out of the stove being put into concentration is that the nitrogenize axle cooling pool of the polyethylene solvent of 8%-15% carries out first time cooling; Will from nitrogenize axle cooling pool cooled bent axle put into nitrogenize axle rinsing bath carry out second time cooling, rinse the solution precipitate on bent axle surface thus complete whole crankshaft nitriding process for cooling.The invention provides a kind of crankshaft nitriding process for cooling, improve bent axle degree of cleaning, reduce the deflection of bent axle, greatly reduce production cost and effectively improve Working environment, thus reaching energy-saving and emission-reduction.
Description
Technical field
The present invention relates to a kind of crankshaft nitriding process for cooling, particularly relate to a kind of crankshaft nitriding process for cooling of depth of water hardening liquid displace oil.
Background technology
Gas nitriding technique is placed in nitriding furnace by workpiece, (N) gas utilizing NH3 gas to be directly input in nitriding furnace to make NH3 gas to be decomposed into atomic condition and (H) gas and carry out Nitrizing Treatment.It makes product surface produce wear-resisting, corrosion-resistant compound layer is main purpose.Nitriding process adopts traditional oil product process for cooling always, but operation site oil smoke is large, larger harm, easily presence of fire is had to the health of operator and environment, and a thick layer of nitrogenize cortex bottom life-time service oil sump, can be accumulated, fluid is very dirty and affect result of use, and replacing bothers and cost is very high, and life-time service journal surface easily can produce incrustation, affect degree of cleaning, increase the difficulty of cleaning.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of crankshaft nitriding process for cooling, improve bent axle degree of cleaning, reducing the deflection of bent axle, greatly reduce production cost and effectively improve Working environment, thus reaching energy-saving and emission-reduction.
The present invention reaches above-mentioned object, and the present invention adopts following technical scheme:
A kind of crankshaft nitriding process for cooling, comprises the steps:
1) first in nitrogenize axle cooling pool, add the polyethylene solvent that concentration is 8%-15%, in nitrogenize axle rinsing bath, add clear water simultaneously; Then bent axle put into nitriding furnace by extension dish and pass into nitriding furnace the ammonia that mass percent concentration is 99.99%, after being incubated 3-6 hours after nitriding furnace being warming up to 500 DEG C-600 DEG C, bent axle is come out of the stove simultaneously;
2) bent axle after coming out of the stove being put into concentration is that the nitrogenize axle cooling pool of the polyethylene solvent of 8%-15% carries out first time cooling;
3) will from nitrogenize axle cooling pool cooled bent axle put into nitrogenize axle rinsing bath carry out second time cooling, rinse the solution precipitate on bent axle surface thus complete whole crankshaft nitriding process for cooling.
In nitrogenize axle cooling pool, add the polyethylene solvent that concentration is 12% in described step 1), in nitrogenize axle rinsing bath, add clear water simultaneously; Then bent axle put into nitriding furnace by extension dish and pass into ammonia to nitriding furnace, after being incubated 4-5 hours after nitriding furnace being warming up to 550 DEG C-570 DEG C, bent axle is come out of the stove simultaneously.
In described step 1), extension dish comprises floral disc, lower floral disc, suspension hook, and wherein said suspension hook runs through floral disc and is connected with lower floral disc; Described upper floral disc and lower floral disc offer permeable hole and permeable groove respectively; Pillar stiffener is separately installed with between described upper floral disc and lower floral disc.
Described step 2) in nitrogenize axle cooling pool be connected with closed cooling tower, described closed cooling tower is connected with basket filter one end by vertical pump, and the described basket filter the other end is connected with nitrogenize axle cooling pool; Polyethylene solvent while bent axle cools in nitrogenize axle cooling pool in nitrogenize axle cooling pool is by closed cooling tower circulating cooling.
Beneficial effect of the present invention is: the invention provides a kind of crankshaft nitriding process for cooling, oil product is replaced with aqua, environmental protect, raising security, on the basis that oils is on the high side, water solvent cooling is adopted to reduce costs, and make sewage discharge meet GB, do not need otherwise processed, the input of the company that also mitigates on disposing of sewage; Improve the degree of cleaning that bent axle is final, the rear bent axle outward appearance of process, degree of cleaning comparatively oil cooling technique improve significantly, and crankshaft deformation amount is also less than oil cooling technique simultaneously, and phenomenon generation scrapped by the bent axle decreased because of distortion generation.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of crankshaft nitriding process for cooling of the present invention;
Fig. 2 is the hydronic structural representation of nitrogenize axle cooling pool;
Fig. 3 is the schematic diagram of extension dish;
Fig. 4 is the vertical view of Fig. 3.
Embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of crankshaft nitriding process for cooling that the present embodiment provides, comprises the steps: the first, first in nitrogenize axle cooling pool 2, adds the polyethylene solvent that concentration is 12%, adds clear water in nitrogenize axle rinsing bath 3 simultaneously; Then bent axle put into nitriding furnace 1 by extension dish 7 and pass into nitriding furnace 1 ammonia that mass percent concentration is 99.99%, after being incubated 4 hours after nitriding furnace 1 being warming up to 550 DEG C, bent axle is come out of the stove simultaneously.The second, be in the nitrogenize axle cooling pool 2 of the polyethylene solvent of 12%, carry out first time cooling by the bent axle degree of putting into after coming out of the stove.Nitrogenize axle cooling pool 2 is connected with closed cooling tower 5, and described closed cooling tower 5 is connected with basket filter 4 one end by vertical pump 6, and described basket filter 4 the other end is connected with nitrogenize axle cooling pool 2.Basket filter can filter the precipitate on bent axle surface, avoids closed cooling tower 5 to occur impurity.Polyethylene solvent while bent axle cools in nitrogenize axle cooling pool 2 in nitrogenize axle cooling pool 2 is by closed cooling tower 5 circulating cooling.Closed cooling tower 5 is connected with vertical pump 6, and vertical pump 6 sends cooled polyethylene solvent back to nitrogenize axle cooling pool 2.3rd, will from nitrogenize axle cooling pool 2 cooled bent axle put into nitrogenize axle rinsing bath 3 carry out second time cooling, rinse the solution precipitate on bent axle surface thus complete whole crankshaft nitriding process for cooling.
Described extension dish 7 comprises floral disc 71, lower floral disc 72, suspension hook 73 as shown in Figure 3, Figure 4, and wherein said suspension hook 73 runs through floral disc 71 and is connected with lower floral disc 72; Described upper floral disc 71 and lower floral disc 72 offer permeable hole 74 and permeable groove 75 respectively; Pillar stiffener 76 is separately installed with between described upper floral disc 71 and lower floral disc 72.About 7 points, nitrogenize cooling extension dish fills two layers, and same layer crankshaft installed divides inside and outside two circles, upper and lower floral disc has many permeable holes 74 and permeable groove 77, to accelerate the contact that extension dish 7 puts into solvent bent axle and solvent, abundant accelerating cooling.
A kind of crankshaft nitriding process for cooling described in the present embodiment, oil product is replaced with aqua, environmental protect, raising security, on the basis that oils is on the high side, water solvent cooling is adopted to reduce costs, and make sewage discharge meet GB, do not need otherwise processed, the input of the company that also mitigates on disposing of sewage; Improve the degree of cleaning that bent axle is final, the rear bent axle outward appearance of process, degree of cleaning comparatively oil cooling technique improve significantly, and crankshaft deformation amount is also less than oil cooling technique simultaneously, and phenomenon generation scrapped by the bent axle decreased because of distortion generation.
Embodiment 2
As shown in Figure 1 and Figure 2, a kind of crankshaft nitriding process for cooling that the present embodiment provides, comprises the steps: the first, first in nitrogenize axle cooling pool 2, adds the polyethylene solvent that concentration is 10%, adds clear water in nitrogenize axle rinsing bath 3 simultaneously; Then bent axle put into nitriding furnace 1 by extension dish 7 and pass into nitriding furnace 1 ammonia that mass percent concentration is 99.99%, after being incubated 5 hours after nitriding furnace 1 being warming up to 500 DEG C, bent axle is come out of the stove simultaneously.The second, be in the nitrogenize axle cooling pool 2 of the polyethylene solvent of 10%, carry out first time cooling by the bent axle degree of putting into after coming out of the stove.Nitrogenize axle cooling pool 2 is connected with closed cooling tower 5, and described closed cooling tower 5 is connected with basket filter 4 one end by vertical pump 6, and described basket filter 4 the other end is connected with nitrogenize axle cooling pool 2.Basket filter can filter the precipitate on bent axle surface, avoids closed cooling tower 5 to occur impurity.Polyethylene solvent while bent axle cools in nitrogenize axle cooling pool 2 in nitrogenize axle cooling pool 2 is by closed cooling tower 5 circulating cooling.Closed cooling tower 5 is connected with vertical pump 6, and vertical pump 6 sends cooled polyethylene solvent back to nitrogenize axle cooling pool 2.3rd, will from nitrogenize axle cooling pool 2 cooled bent axle put into nitrogenize axle rinsing bath 3 carry out second time cooling, rinse the solution precipitate on bent axle surface thus complete whole crankshaft nitriding process for cooling.
Described extension dish 7 comprises floral disc 71, lower floral disc 72, suspension hook 73 as shown in Figure 3, Figure 4, and wherein said suspension hook 73 runs through floral disc 71 and is connected with lower floral disc 72; Described upper floral disc 71 and lower floral disc 72 offer permeable hole 74 and permeable groove 75 respectively; Pillar stiffener 76 is separately installed with between described upper floral disc 71 and lower floral disc 72.About 7 points, nitrogenize cooling extension dish fills two layers, and same layer crankshaft installed divides inside and outside two circles, upper and lower floral disc has many permeable holes 74 and permeable groove 77, to accelerate the contact that extension dish 7 puts into solvent bent axle and solvent, abundant accelerating cooling.
A kind of crankshaft nitriding process for cooling described in the present embodiment, oil product is replaced with aqua, environmental protect, raising security, on the basis that oils is on the high side, water solvent cooling is adopted to reduce costs, and make sewage discharge meet GB, do not need otherwise processed, the input of the company that also mitigates on disposing of sewage; Improve the degree of cleaning that bent axle is final, the rear bent axle outward appearance of process, degree of cleaning comparatively oil cooling technique improve significantly, and crankshaft deformation amount is also less than oil cooling technique simultaneously, and phenomenon generation scrapped by the bent axle decreased because of distortion generation.
Embodiment 3
As shown in Figure 1 and Figure 2, a kind of crankshaft nitriding process for cooling that the present embodiment provides, comprises the steps: the first, first in nitrogenize axle cooling pool 2, adds the polyethylene solvent that concentration is 15%, adds clear water in nitrogenize axle rinsing bath 3 simultaneously; Then bent axle put into nitriding furnace 1 by extension dish 7 and pass into nitriding furnace 1 ammonia that mass percent concentration is 99.99%, after being incubated 4 hours after nitriding furnace 1 being warming up to 600 DEG C, bent axle is come out of the stove simultaneously.The second, be in the nitrogenize axle cooling pool 2 of the polyethylene solvent of 15%, carry out first time cooling by the bent axle degree of putting into after coming out of the stove.Nitrogenize axle cooling pool 2 is connected with closed cooling tower 5, and described closed cooling tower 5 is connected with basket filter 4 one end by vertical pump 6, and described basket filter 4 the other end is connected with nitrogenize axle cooling pool 2.Basket filter can filter the precipitate on bent axle surface, avoids closed cooling tower 5 to occur impurity.Polyethylene solvent while bent axle cools in nitrogenize axle cooling pool 2 in nitrogenize axle cooling pool 2 is by closed cooling tower 5 circulating cooling.Closed cooling tower 5 is connected with vertical pump 6, and vertical pump 6 sends cooled polyethylene solvent back to nitrogenize axle cooling pool 2.3rd, will from nitrogenize axle cooling pool 2 cooled bent axle put into nitrogenize axle rinsing bath 3 carry out second time cooling, rinse the solution precipitate on bent axle surface thus complete whole crankshaft nitriding process for cooling.
Described extension dish 7 comprises floral disc 71, lower floral disc 72, suspension hook 73 as shown in Figure 3, Figure 4, and wherein said suspension hook 73 runs through floral disc 71 and is connected with lower floral disc 72; Described upper floral disc 71 and lower floral disc 72 offer permeable hole 74 and permeable groove 75 respectively; Pillar stiffener 76 is separately installed with between described upper floral disc 71 and lower floral disc 72.About 7 points, nitrogenize cooling extension dish fills two layers, and same layer crankshaft installed divides inside and outside two circles, upper and lower floral disc has many permeable holes 74 and permeable groove 77, to accelerate the contact that extension dish 7 puts into solvent bent axle and solvent, abundant accelerating cooling.
A kind of crankshaft nitriding process for cooling described in the present embodiment, oil product is replaced with aqua, environmental protect, raising security, on the basis that oils is on the high side, water solvent cooling is adopted to reduce costs, and make sewage discharge meet GB, do not need otherwise processed, the input of the company that also mitigates on disposing of sewage; Improve the degree of cleaning that bent axle is final, the rear bent axle outward appearance of process, degree of cleaning comparatively oil cooling technique improve significantly, and crankshaft deformation amount is also less than oil cooling technique simultaneously, and phenomenon generation scrapped by the bent axle decreased because of distortion generation.
Claims (4)
1. a crankshaft nitriding process for cooling, is characterized in that comprising the steps:
First in nitrogenize axle cooling pool (2), add the polyethylene solvent that concentration is 8%-15%, in nitrogenize axle rinsing bath (3), add clear water simultaneously; Then bent axle put into nitriding furnace (1) by extension dish (7) and pass into nitriding furnace (1) ammonia that mass percent concentration is 99.99%, after being incubated 3-6 hours after nitriding furnace (1) being warming up to 500 DEG C-600 DEG C, bent axle is come out of the stove simultaneously;
Bent axle after coming out of the stove being put into concentration is that the nitrogenize axle cooling pool (2) of the polyethylene solvent of 8%-15% carries out first time cooling;
Will from nitrogenize axle cooling pool (2) cooled bent axle put into nitrogenize axle rinsing bath (3) carry out second time cooling, rinse the solution precipitate on bent axle surface thus complete whole crankshaft nitriding process for cooling.
2. a kind of crankshaft nitriding process for cooling according to claim 1, is characterized in that: the concentration of the polyethylene solvent added in nitrogenize axle cooling pool (2) in described step 1) is 12%; The holding temperature of described nitriding furnace (1) is 550 DEG C-570 DEG C, and its soaking time is 4-5 hours.
3. a kind of crankshaft nitriding process for cooling according to claim 1, it is characterized in that: in described step 1), extension dish (7) comprises floral disc (71), lower floral disc (72), suspension hook (73), wherein said suspension hook (73) runs through floral disc (71) and is connected with lower floral disc (72); Described upper floral disc (71) and lower floral disc (72) offer permeable hole (74) and permeable groove (75) respectively; Pillar stiffener (76) is separately installed with between described upper floral disc (71) and lower floral disc (72).
4. a kind of crankshaft nitriding process for cooling according to claim 1, it is characterized in that: described step 2) in nitrogenize axle cooling pool (2) be connected with closed cooling tower (5), described closed cooling tower (5) is connected with basket filter (4) one end by vertical pump (6), and described basket filter (4) the other end is connected with nitrogenize axle cooling pool (2); The polyethylene solvent of bent axle in nitrogenize axle cooling pool (2) while cooling in nitrogenize axle cooling pool (2) is by closed cooling tower (5) circulating cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310251517.3A CN103334076B (en) | 2013-06-21 | 2013-06-21 | A kind of crankshaft nitriding process for cooling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310251517.3A CN103334076B (en) | 2013-06-21 | 2013-06-21 | A kind of crankshaft nitriding process for cooling |
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| Publication Number | Publication Date |
|---|---|
| CN103334076A CN103334076A (en) | 2013-10-02 |
| CN103334076B true CN103334076B (en) | 2015-11-18 |
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| CN201310251517.3A Expired - Fee Related CN103334076B (en) | 2013-06-21 | 2013-06-21 | A kind of crankshaft nitriding process for cooling |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0818546A1 (en) * | 1996-07-12 | 1998-01-14 | Honda Giken Kogyo Kabushiki Kaisha | High fatigue strength gear |
| CN102758168A (en) * | 2011-04-27 | 2012-10-31 | 广西玉柴机器股份有限公司 | Device for nitriding crank shaft and inside furnace |
-
2013
- 2013-06-21 CN CN201310251517.3A patent/CN103334076B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0818546A1 (en) * | 1996-07-12 | 1998-01-14 | Honda Giken Kogyo Kabushiki Kaisha | High fatigue strength gear |
| CN102758168A (en) * | 2011-04-27 | 2012-10-31 | 广西玉柴机器股份有限公司 | Device for nitriding crank shaft and inside furnace |
Non-Patent Citations (1)
| Title |
|---|
| 曲轴气体软氮化冷却介质的改进;周陆飞;《机械工程材料》;20130430;第37卷(第4期);全文 * |
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Bojun Inventor after: Yan Shuijuan Inventor after: Wang Xiaocui Inventor after: Zhang Sijie Inventor before: Liu Bojun Inventor before: Yan Shuijuan Inventor before: Zhang Sijie |
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Free format text: CORRECT: INVENTOR; FROM: LIU BOJUN YAN SHUIJUAN ZHANG SIJIE TO: LIU BOJUN YAN SHUIJUAN WANG XIAOCUI ZHANG SIJIE |
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Granted publication date: 20151118 Termination date: 20190621 |
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